Re: Another mtrr - BIOS-e820 mismatch

[Catalin BOIE]

> > It's a Intel MB, with 2 Pentium 4, with HT, 2GB RAM.
> > (Sorry I could not get more info.)
> >
> > reg00: base=0x00000000 (   0MB), size=2048MB: write-back, count=1
> > reg01: base=0x7ff80000 (2047MB), size= 512KB: uncachable, count=1
> >
> > BIOS-provided physical RAM map:
> > BIOS-e820: 0000000000000000 - 000000000009b400 (usable)
> > BIOS-e820: 000000000009b400 - 00000000000a0000 (reserved)
> > BIOS-e820: 00000000000cc000 - 00000000000d0000 (reserved)
> > BIOS-e820: 00000000000e0000 - 0000000000100000 (reserved)
> > BIOS-e820: 0000000000100000 - 000000007ff70000 (usable)
> > BIOS-e820: 000000007ff70000 - 000000007ff7b000 (ACPI data)
> > BIOS-e820: 000000007ff7b000 - 000000007ff80000 (ACPI NVS)
> > BIOS-e820: 000000007ff80000 - 0000000080000000 (reserved)
> > BIOS-e820: 00000000fec00000 - 00000000fec10000 (reserved)
> > BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved)
> > BIOS-e820: 00000000ff800000 - 00000000ffc00000 (reserved)
> > BIOS-e820: 00000000fff00000 - 0000000100000000 (reserved)
>
> Not a problem. All "usable" memory is cacheable, which
> is what matters for performance. You did lose some RAM
> in the e820 map, but that's a relatively minor issue.

Thanks.

---
Catalin(ux aka Dino) BOIE
catab at deuroconsult.ro
http://kernel.umbrella.ro/
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